An Amtrak train derailed south of Seattle, and authorities say "injuries and casualties" were reported. The train derailed about 40 miles (64 kilometers) south of Seattle before 8 am Monday, spilling at least one train car on to busy Interstate 5. The Pierce County Sheriff's office says in a tweet that the train was heading south bound and that there were "injuries and casualties," but no numbers were immediately available.

An Amtrak train has derailed over a major highway commuter route in Pierce County, Washington State. The Pierce County Sheriff's Office tweeted that 'injuries and casualties' have been reported, adding that more details will be provided shortly. It occurred during the morning rush hour. The train fell onto a highway which has now been blocked off, according to the Washington Department of Transportation.

Two train carriages have plummeted on to a motorway in Washington state, causing a number of fatalities, police say.The train derailed and the carriages fell on to the I-5 highway below.Images from the scene show emergency services treating people on the ground. Amtrak confirmed there had been injuries.Several cars on the highway were struck by the derailed carriages, the Pierce County Sheriff's department says.Sheriff department spokesman Ed Troyer has told local media that there are fatalities and people still trapped on the train.Among motorists caught up in the incident there were a number of people injured but no one killed, the department said.